I think it is a waste of money personally. Also know alot of people who have had problems with less expensive pulleys walking off the crank, cracking and warping. If you are hell bent on doing it I'd get the ATI but personally I think you could spend money in better places. The LS1 already revs really fast and the HP gain isn't all that noticeable. Up to you but I wouldn't waste the cash, you will see no real gain from it IMO.
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-Nick
9/11/01 NEVER forget!
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